CN106541316A - Music box tablet automatic grinding method and device - Google Patents
Music box tablet automatic grinding method and device Download PDFInfo
- Publication number
- CN106541316A CN106541316A CN201611126425.2A CN201611126425A CN106541316A CN 106541316 A CN106541316 A CN 106541316A CN 201611126425 A CN201611126425 A CN 201611126425A CN 106541316 A CN106541316 A CN 106541316A
- Authority
- CN
- China
- Prior art keywords
- tablet
- emery wheel
- grinding
- controller
- music box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/003—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving acoustic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
Abstract
The invention discloses a kind of music box tablet automatic grinding method, is ground tablet by grinding tool, the stock removal of tablet is measured from detector detection tablet is contacted with grinding tool, is then ground to set amount.Music box tablet automatic grinding device is accordingly provided, which includes clamping device, grinding mechanism, controller and sonar sensor；Clamping device clamps tablet, grinding mechanism drives emery wheel action, grinding mechanism controls its action by controller, whether sonar sensor detection tablet is contacted with emery wheel and sends activation signal to controller, and controller starts metering stock removal and stops grinding mechanism to after reaching setting stock removal after receiving activation signal.It is an advantage of the current invention that：1st, whether contacted with emery wheel using sonar sensor detection tablet, this determination methods precision is higher.2nd, stock removal can be precisely controlled, grinding accuracy is improved.3rd, more accurately adjust the frequency of tablet.
Description
Technical field
The present invention relates to music box tablet processing method and equipment, are especially ground the method and device of tablet key.
Background technology
Tablet in musical box refers to the pronunciation part of musical box, also referred to as tuning fork, soundboard etc., and which includes multiple or many sounds
Key.During manufacture tablet, the key to ensure tablet is needed by the quality of each key on tablet to send the sound of standard.And it is mechanical
In processing, the tablet that preliminary working goes out usually substandard pronunciation needs to adjust sonic frequency when key vibrates for this, often
The mode of frequency regulation of rule is using artificial operation：The hand-held electronic bistrique of workman one, the hand-held plectrum of another, electricity consumption rotary bistrique are ground
Cut.Artificial frequency modulation operation needs operator to possess preferable operant skill, high labor intensive, and during operation, potential safety hazard is big.Also it is useful
Electrolytic method carries out frequency modulation to music box tablet, and its method is to place to be electrolysed tablet in the electrolytic solution, by galvanic corrosion side
Method, is allowed to the quality of micro change tablet, and this mode there is also some defects：During electrolysis frequency modulation, electrolytic head is maintained static,
Tablet root can only be electrolysed, tablet head material cannot be electrolysed when the electrolysis of tablet root is excessive and carry out frequency modulation.
The content of the invention
The technical problem to be solved is to overcome the above-mentioned not enough of prior art and provide a kind of music box tablet
Automatic grinding method, can be by its frequency of vibration of grinding tablet adjust automatically.
The present invention also correspondingly provides a kind of music box tablet automatic grinding device so as to be capable of shaking for adjust automatically tablet
Dynamic frequency.
The present invention the adopted technical scheme that solves the above problems is：
Music box tablet automatic grinding method, it is characterised in that：Tablet is ground by grinding tool, the stock removal of tablet is from detector
Detection tablet has contacted metering with grinding tool, is then ground to set amount.
Preferably, above-mentioned detector is sonar sensor, and its detection is more accurate, so as to the stock removal for ensureing tablet is more smart
Really.
More specifically, above-mentioned music box tablet automatic grinding method, including：Step 1, determines the stock removal of tablet；Step
2, need the position of grinding close the emery wheel of rotation and tablet；Step 3, determines emery wheel and tablet using sonar sensor detection
Whether contact；Step 4, after tablet is contacted with emery wheel, completes the grinding of tablet by the stock removal for determining.
More specifically, above-mentioned music box tablet automatic grinding method, including：Step 1, by the stock removal input control of tablet
Device；Step 2, controls grinding mechanism or tablet clamping device using controller, and the emery wheel of rotation and tablet are needed the portion of grinding
Position is close；Whether step 3, sonar sensor detection tablet are contacted with emery wheel；If tablet is with emery wheel not in contact with continuation control mill
Mechanism's movement emery wheel, or control tablet clamping device movement tablet are cut, until tablet is contacted with emery wheel；Step 4, tablet and sand
After wheel contact, controller controls emery wheel movement by grinding mechanism according to the stock removal of setting, or is moved by tablet clamping device
Dynamic tablet, moving process medium plain emery wheel grinding tablet, until the stock removal set in completing step 1.
Correspondingly, there is provided music box tablet automatic grinding device, it include clamping device, grinding mechanism, controller and
Sonar sensor；Clamping device clamps tablet, and grinding mechanism drives emery wheel action, grinding mechanism to control its action by controller,
Whether sonar sensor detection tablet is contacted with emery wheel and sends activation signal to controller, and controller is opened after receiving activation signal
Beginning metering stock removal stops grinding mechanism to after reaching setting stock removal.
Preferably, grinding mechanism includes emery wheel, emery wheel driver, horizontal mobile mechanism and vertical movement mechanism, and emery wheel drives
Dynamic device drives emery wheel rotation, horizontal mobile mechanism and vertical movement mechanism to move horizontally and vertically move emery wheel driver respectively,
Emery wheel position can be so moved easily and adjust, it is accurate to determine emery wheel displacement.
More specifically, above-mentioned emery wheel driver is motor, horizontal mobile mechanism is horizontal electric cylinders, and vertical movement mechanism is perpendicular
Straight electric cylinders, emery wheel are fixed on the rotating shaft of motor, and motor is fixed on motor base, and motor base is fixed on the elevating lever of vertical electric cylinders, erect
Straight electric cylinders are fixed on the movable plate of horizontal electric cylinders, the rotation and horizontal electric cylinders, the action of vertical electric cylinders of controller control motor.
Preferably, grinding attachment also includes Shang Ding mechanisms, and Shang Ding mechanisms include jacking block, upper jacking block drive mechanism, tablet
Between upper jacking block and emery wheel, upper jacking block drive mechanism drives upper jacking block to withstand or leave tablet, the upper jacking block of controller control
The action of drive mechanism.
More specifically, above-mentioned upper jacking block drive mechanism is upper top gas cylinder.
Compared with prior art, it is an advantage of the current invention that：1st, detect whether tablet and emery wheel connect using sonar sensor
Touch, if contacted, with the position as the reference position that starts to be ground, this determination methods are compared with manual method and its other party
Method precision is higher.2nd, after emery wheel is contacted with tablet, relative displacement of the controller according to the grinding output controlling emery wheel and tablet for prestoring,
Stock removal can be precisely controlled, grinding accuracy is improved.3rd, emery wheel can vertically, move horizontally, tablet key can be ground not
Same position, adjusts the quality of tablet for greater flexibility, especially can increase and decrease sound by the head of grinding tablet key or root
The frequency of piece key, so as to frequency that is more flexible, adjusting tablet exactly,.
Description of the drawings
Fig. 1 is the structural representation of existing music box tablet.
Fig. 2 is grinding mechanism, clamping device, Shang Ding mechanisms, the structural representation of sonar sensor in the embodiment of the present invention.
Fig. 3 is the structural representation of grinding mechanism in Fig. 2.
Fig. 4 is the structural representation of Tu2Zhong Shangding mechanisms, sonar sensor.
Fig. 5 is the structural representation of the clamping transfer device of the embodiment of the present invention.
Fig. 6 is the structural representation of another direction of observation of Fig. 5.
Specific embodiment
Below in conjunction with the accompanying drawings, the invention will be further described for embodiment.
The structure of music box tablet as shown in figure 1, the head of lamellar tablet 5 has many keys side by side, in order to adjust tablet
Vibration when frequency, need to process the key of tablet head, automatic grinding music box tablet method adopts following steps：
Step 1, by the stock removal input controller of tablet, by grinding mechanism control parameter input controller.
Step 2, makes grinding mechanism drive the emery wheel of rotation and tablet to need the position of grinding close by controller.
Step 3, using the sonar sensor detection being connected with controller, judges whether tablet has just been contacted with emery wheel；If
Tablet is with emery wheel not in contact with continuation control grinding mechanism movement emery wheel, until tablet is contacted with emery wheel；
Step 4, after tablet is contacted with emery wheel, controller according to setting stock removal by grinding mechanism control emery wheel rotating speed,
Lifting displacement, moving displacement etc., wheel grinding tablet during this, until having run the grinding of grinding mechanism control program setting
Amount.
After the completion of grinding, emery wheel and tablet are removed by controller, that is, complete the automatic grinding process of a tablet.
The position of emery wheel can certainly be fixed, controlling tablet clamping device by controller moves tablet, equally
The purpose of automatic grinding tablet can be reached.Both difference is only which actively moves which position is fixed for emery wheel or tablet.
The device embodiment of tablet is ground using said method as shown in Fig. 2 grinding attachment includes grinding mechanism 1, clamping
Mechanism 2, Shang Ding mechanisms 3, sonar sensor 4 and controller.
The structure of grinding mechanism 1 is as shown in figure 3, grinding mechanism 4 includes vertical electric cylinders 11, motor base 12, emery wheel 13, motor
14th, horizontal electric cylinders 15.Emery wheel 13 is fixed on the rotating shaft of motor 14, and motor 14 fixes the lifting of vertical electric cylinders 11 by motor base 12
On bar, vertical electric cylinders 11 are fixed on the movable plate of horizontal electric cylinders 15, and such emery wheel 13 is rotated under the drive of motor 14, is passed through
Vertically electric cylinders 11, horizontal electric cylinders 15 adjust the position of emery wheel, to control position, the depth of wheel grinding key.
Clamping device 2 is the part for clamping tablet, can be the mechanisms such as conventional clip, and the structure adopted in the present embodiment is such as
Shown in Fig. 2, clamping device 2 clamps tablet 5 and tablet 5 is sent to the underface of grinding mechanism medium plain emery wheel 13.
As shown in Figure 5, Figure 6, clamping transfer device includes electric cylinders 21, planker 25, clamps pressure the structure of clamping transfer device 2
Plate 23, clamping cylinder 22, blanking cylinder 24, tablet seat 26, blanking push pedal 27, column 29.
Driver part of the electric cylinders 21 as planker 25, drives planker 25 to translate.Planker 25 be article carrying platform, above fixation clamp
Tight cylinder 22, blanking cylinder 24, tablet seat 26, column 29.
Clamping cylinder 22 used as the driver part for driving the lifting of 23 one end of clamping press plate, be fixed on by the bottom of clamping cylinder 22
Planker 25, the expansion link top on top are flexibly connected with one end of clamping press plate 23.
Clamping press plate 23 is strip, and wherein one end is flexibly connected with the expansion link top of clamping cylinder 22：Clamping press plate
23 end is provided with vertical slot, and the side of vertical slot is provided with horizontal concrete chute 210, and horizontal concrete chute is inserted into connecting rod 211, connecting rod 211
Can be in sliding in front and back in horizontal concrete chute 210；Clamping cylinder expansion link 212 is setting up and down, upper end connection connecting rod 211.Clamping cylinder
Expansion link 212 moves up and down and one end of clamping press plate 23 can be driven to lift, and in lifting process, connecting rod 211 is in horizontal concrete chute 210
Sliding in front and back, due to there is radian in 23 end lifting process of clamping press plate, arranging horizontal concrete chute 210 can prevent clamping press plate end
The clamping cylinder expansion link 21 that portion's lifting is caused rocks back and forth.
The other end of clamping press plate 23 carries pressure head, and the stage casing of clamping press plate 23 is by rotating shaft and a vertical column 29
Top connects, and the lower end of column 29 is fixed on above planker 25.22 expansion link of clamping cylinder moves up and down and drives clamping press plate
23 one end lifting, relative to the strong point, one end of clamping press plate 23 lifts for the rotating shaft in 29 top of column and clamping press plate stage casing
The pressure head of the other end is driven to push or upwarp.
Tablet seat 26 is fixed on above planker 25, and the upper plane of tablet seat 26 be located at clamping press plate pressure head just under
Side, the upper plane of tablet seat 26 is used as the platform for placing tablet 7, in order to ensure to place the position consistency of tablet 7, tablet seat 7
The positive stop strip 213 of plane on protrusion tablet seat is set on one of side, and after placing tablet 7 every time, the side of tablet 7 is close to
Positive stop strip 213, that is, positive stop strip 213 is used as the benchmark for placing 7 side of tablet.
For the ease of dismounting, moving column 29 and tablet seat 26, screw fixed support 214, support are adopted on planker 25
Installing hole is provided with 214,29 bottom of column is may be inserted in installing hole, by the lower end of installing hole vertical columns 29, column 29
Bottom may also set up the shaft shoulder of the external diameter more than installing hole, limit the setting height(from bottom) of column 29 using the shaft shoulder.Tablet seat 26 is also fixed
On support 214, so as to while mobile column 29 and tablet seat 26.
Blanking push pedal 27 is tabular, and blanking push pedal 27 is positioned at the top and the side in clamping press plate pressure head of tablet seat 26
Lower section, as shown in Figure 6.
Driver part of the blanking cylinder 24 as blanking push pedal 27, blanking cylinder 24 are fixed on the upper plane of planker 25, under
The expansion link of material cylinder 24 is horizontally disposed with, and expansion link front end is fixedly connected with blanking push pedal 27, and starting blanking cylinder 24 can drive
Dynamic blanking push pedal 27 is elapsed in the upper plane of tablet seat 26 forward, promotes tablet 7.
Clamping 2 course of work of transfer device：Displacement electric cylinders 21 drive electric cylinders planker 25 to translate, and make tablet seat 26 press close to feeding
The end face of the loading guide 15 of mechanism 1, tablet 7 are pushed to tablet seat 26 by feeding push pedal 16.Start 22 jack-up of clamping cylinder to clamp
One end of pressing plate 23, and the other end pressure head of clamping press plate 23 pushes the afterbody for clamping tablet 7, and the head that key 71 is located hangs
It is empty.Displacement electric cylinders 21 drive displacement planker 25 to translate the processing stations that tablet 7 is sent to grinding mechanism, after process finishing, clamp
22 retraction expansion link 212 of cylinder makes the pressure head of 23 other end of clamping cylinder lift release tablet 7.
The structure of Shang Ding mechanisms 3 as shown in figure 4, which includes jacking block 31, upper jacking block fixed seat 32, upper top gas cylinder 33, on
Jacking block 31 is fixed on jacking block fixed seat 32, and upper jacking block fixed seat 32 is fixed on the expansion link of top gas cylinder 33, upper jacking block 31
Positioned at the underface of emery wheel 13, after clamping device 2 moves to tablet 5 below emery wheel, upper top gas cylinder 33 drives upper jacking block 31
Upper shifting, withstands tablet 5 upwards, preferably supports to 5 overhanging portion of tablet, is squeezed when preventing the key of tablet because of wheel grinding
And deform.
Whether the detection revolving wheel 13 of sonar sensor 4 contacts tablet, and sonar sensor 4 can be fixed in Shang Ding mechanisms
In upper jacking block fixed seat, as shown in figure 4, this is located proximate to emery wheel, tablet, it is easy to detect tablet contact with emery wheel 13.
Certainly, sonar sensor is could be secured on other parts of grinding mechanism.
Cylinder, electric cylinders in controller control grinding mechanism, motor, by the rotation of motor control emery wheel, control is vertical
Electric cylinders 11 and horizontal electric cylinders 15 controlling and adjust the position of emery wheel, more preferably, to be more accurately directed at tablet and amount of movement.
Controller also controls top gas cylinder 33, so can operate synchronous matching with emery wheel.
Controller connects sonar sensor 4, and sonar sensor 4 is signaled to control when monitoring that tablet is contacted with emery wheel
Device, controller start metering, and in the present embodiment, controller control emery wheel moves forward the stock removal of distance namely tablet.
The displacement of clamping device 2 can also be controlled by controller, that is, move distance that tablet advances to emery wheel and
Obtain stock removal.
Claims (9)
1. music box tablet automatic grinding method, it is characterised in that：Tablet is ground by grinding tool, the stock removal of tablet is from detection
Device detection tablet has contacted metering with grinding tool, is then ground to set amount.
2. music box tablet automatic grinding method according to claim 1, it is characterised in that：The detector is passed for sonar
Sensor.
3. music box tablet automatic grinding method according to claim 2, it is characterised in that：Including：Step 1, determines sound
The stock removal of piece；The emery wheel of rotation and tablet are needed the position of grinding close by step 2；Step 3, is examined using sonar sensor
Survey and determine whether emery wheel is contacted with tablet；Step 4, after tablet is contacted with emery wheel, completes the grinding of tablet by the stock removal for determining.
4. music box tablet automatic grinding method according to claim 3, it is characterised in that：Including：Step 1, by tablet
Stock removal input controller；Step 2, controls grinding mechanism or tablet clamping device using controller, by the emery wheel of rotation with
Tablet needs the position of grinding close；Whether step 3, sonar sensor detection tablet are contacted with emery wheel；If tablet and emery wheel
Not in contact with, continuation control grinding mechanism movement emery wheel, or control tablet clamping device movement tablet, until tablet is connect with emery wheel
Touch；Step 4, after tablet is contacted with emery wheel, controller controls emery wheel movement by grinding mechanism according to the stock removal of setting, or logical
Cross tablet clamping device movement tablet, moving process medium plain emery wheel grinding tablet, until completing the stock removal of the setting in step 1.
5. music box tablet automatic grinding device, it is characterised in that：Pass including clamping device, grinding mechanism, controller and sonar
Sensor；Clamping device clamps tablet, and grinding mechanism drives emery wheel action, grinding mechanism to control its action by controller, and sonar is passed
Whether sensor detection tablet is contacted with emery wheel and sends activation signal to controller, and controller starts metering after receiving activation signal
Stock removal stops grinding mechanism to after reaching setting stock removal.
6. music box tablet automatic grinding device according to claim 5, it is characterised in that：The grinding mechanism includes sand
Wheel, emery wheel driver, horizontal mobile mechanism and vertical movement mechanism, the rotation of emery wheel driver drives emery wheel, horizontal mobile mechanism
Move horizontally and vertically move emery wheel driver with vertical movement mechanism respectively.
7. music box tablet automatic grinding device according to claim 5, it is characterised in that：The emery wheel driver is horse
Reach, horizontal mobile mechanism is horizontal electric cylinders, and vertical movement mechanism is vertical electric cylinders, and emery wheel is fixed on the rotating shaft of motor, and motor is solid
Due to motor base, motor base is fixed on the elevating lever of vertical electric cylinders, and vertical electric cylinders are fixed on the movable plate of horizontal electric cylinders, control
The rotation and horizontal electric cylinders, the action of vertical electric cylinders of device control motor.
8. music box tablet automatic grinding device according to claim 5, it is characterised in that：The grinding attachment also includes
Shang Ding mechanisms, Shang Ding mechanisms include jacking block, upper jacking block drive mechanism, and tablet is located between upper jacking block and emery wheel, and upper jacking block drives
Motivation structure drives upper jacking block to withstand or leave tablet, the action of the upper jacking block drive mechanism of controller control.
9. music box tablet automatic grinding device according to claim 5, it is characterised in that：The clamping device includes dragging
Plate, planker driver part, clamping press plate, pressing plate driver part, column, tablet seat, blanking push pedal, push pedal driver part；Pressing plate
Driver part, column, tablet seat, push pedal driver part are fixed on planker, and planker driver part drives planker translation；Clamping press plate
Stage casing be flexibly connected by rotating shaft with the upper end of vertical column, one end of clamping press plate is driven by pressing plate driver part and is lifted,
The other end of clamping press plate carries pressure head, lifts or pushes on the lift band dynamic head of clamping press plate one end, and the underface of pressure head is arranged
Tablet seat, arranges blanking push pedal above tablet seat, blanking push pedal is located at the side-lower of pressure head, and push pedal driver part drives blanking to push away
Plate is translated above tablet seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126425.2A CN106541316A (en) | 2016-12-09 | 2016-12-09 | Music box tablet automatic grinding method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126425.2A CN106541316A (en) | 2016-12-09 | 2016-12-09 | Music box tablet automatic grinding method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106541316A true CN106541316A (en) | 2017-03-29 |
Family
ID=58396847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611126425.2A Pending CN106541316A (en) | 2016-12-09 | 2016-12-09 | Music box tablet automatic grinding method and device |
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| Country | Link |
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| CN (1) | CN106541316A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171996A (en) * | 1997-07-26 | 1998-02-04 | 邬国权 | Tablet grinding big groove fixture |
| US6239336B1 (en) * | 1997-10-02 | 2001-05-29 | Sankyo Seiki Mfg. Co., Ltd. | Music box having an improved, rigid base frame |
| CN201224036Y (en) * | 2008-06-23 | 2009-04-22 | 宁波韵升股份有限公司 | Sound board locating and clamping device |
| CN102737624A (en) * | 2012-06-19 | 2012-10-17 | 长沙理工大学 | Music sheet automatic frequency modulation equipment |
| CN103341672A (en) * | 2013-06-06 | 2013-10-09 | 王军波 | Fine adjusting machine for adjusting tablet voice frequency |
| CN204117582U (en) * | 2013-06-26 | 2015-01-21 | 宁波韵声机芯制造有限公司 | A kind of music box tablet frequency modulation device |
| CN206780101U (en) * | 2016-12-09 | 2017-12-22 | 宁波韵声机芯制造有限公司 | Music box tablet automatic grinding device |
-
2016
- 2016-12-09 CN CN201611126425.2A patent/CN106541316A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171996A (en) * | 1997-07-26 | 1998-02-04 | 邬国权 | Tablet grinding big groove fixture |
| US6239336B1 (en) * | 1997-10-02 | 2001-05-29 | Sankyo Seiki Mfg. Co., Ltd. | Music box having an improved, rigid base frame |
| CN201224036Y (en) * | 2008-06-23 | 2009-04-22 | 宁波韵升股份有限公司 | Sound board locating and clamping device |
| CN102737624A (en) * | 2012-06-19 | 2012-10-17 | 长沙理工大学 | Music sheet automatic frequency modulation equipment |
| CN103341672A (en) * | 2013-06-06 | 2013-10-09 | 王军波 | Fine adjusting machine for adjusting tablet voice frequency |
| CN204117582U (en) * | 2013-06-26 | 2015-01-21 | 宁波韵声机芯制造有限公司 | A kind of music box tablet frequency modulation device |
| CN206780101U (en) * | 2016-12-09 | 2017-12-22 | 宁波韵声机芯制造有限公司 | Music box tablet automatic grinding device |
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Application publication date: 20170329 |
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